CN210858782U - Ventilation equipment for subway tunnel - Google Patents
Ventilation equipment for subway tunnel Download PDFInfo
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- CN210858782U CN210858782U CN201921585546.2U CN201921585546U CN210858782U CN 210858782 U CN210858782 U CN 210858782U CN 201921585546 U CN201921585546 U CN 201921585546U CN 210858782 U CN210858782 U CN 210858782U
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- 238000009423 ventilation Methods 0.000 title claims abstract description 28
- 230000008859 change Effects 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000009792 diffusion process Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 abstract description 6
- 206010010904 Convulsion Diseases 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000036461 convulsion Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000004308 accommodation Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Abstract
The utility model discloses a ventilation equipment for subway tunnel belongs to intelligent transmission technical field, a ventilation equipment for subway tunnel, frequency conversion through driving motor realizes quick anti-just, and in the ventilation operation, the change of the angle change control wind direction of the blade of adoption fan, accomplish fast from blowing to convulsions or from convulsions to the quick conversion of blowing fast, one end through at speed change gear sets up the blast gate, when the occasion at needs adjustment amount of wind and wind pressure, adjust through the rotational speed and the blast gate that adopt control fan, and then after adopting the adjustment blade of not stopping, the adjustment of amount of wind pressure wind direction can become very convenient, whole accommodation process is swift, fan efficiency after adjusting is also in higher level.
Description
Technical Field
The utility model belongs to the technical field of intelligent transmission, concretely relates to ventilation equipment for subway tunnel.
Background
Subway tunnels are generally built in deep underground, so that inconvenience exists naturally, and natural ventilation of the subway tunnels cannot meet the requirements of safety standards. Providing air required by normal activities of underground personnel so as to facilitate air circulation in the tunnel; on the other hand, in the tunnel, a fire accident or a situation of high smoke concentration occasionally occurs, and a countermeasure is indispensable. The ventilation blower is one of the measures of the problem, and the air draft and the blowing action of the ventilation blower are required by the subway tunnel. The existing equipment is hardware, the rapidity of solving faults is the other point, and an appropriate control mode is also very important.
The fan not only provides ventilation for the subway tunnel in all time periods of the day, but also is a safety guarantee when accidents such as fire disasters occur. Because the subway tunnel operating mode is becoming complicated now, also put forward higher requirement to the operational capability that the tunnel ventilation machine air supply was aired exhaust. The prior art fan and the fan blade are mostly fixed. The air volume and the air pressure of the fan can not be adjusted when the fan operates, the angle installation of the blade needs to be carried out in the shutdown state in the traditional installation mode, the mode needs to consume large manpower and material resources, and the air volume and the air pressure of the fan can not be adjusted when the fan operates.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the ventilation equipment for the subway tunnel and the working method thereof are provided, and the problems in the prior art are solved.
The technical scheme is as follows: a ventilation apparatus for a subway tunnel, comprising;
the ventilation device comprises an I-shaped steel base, a ventilator cover fixedly arranged on the I-shaped steel base, an impeller assembly coaxially arranged in the ventilator cover, a streamline body coaxially matched with the ventilator cover and positioned on the left side of the ventilator cover, a main air duct fixedly connected to the outer wall of the ventilator cover, a current collector fixedly arranged on the inner wall of the main air duct, a rectifier body and a diffusion tube arranged on the right side of the main air duct, and a strut fixedly connected to the outer wall of the rectifier body in a threaded manner and penetrating through the diffusion tube;
the driving device comprises a driving motor, a speed change gear arranged at the rotating end of the driving motor, an air valve connected to the speed change gear, a coupler arranged on a rotating speed shaft of the speed change gear in an interference fit manner, and a transmission shaft with one end fixedly connected to one end of the coupler and the other end penetrating through the collector and the impeller which are connected together.
In a further example, the impeller assembly includes a hub coaxially keyed on the transmission shaft, a shroud threadably mounted on the hub, 16 moving blades threadably mounted on the shroud and mounted at an angle of 0 °, the moving blades 16 being mounted on the shroud in equal parts.
In a further example, the streamline body is designed to be hemispherical, a through hole is arranged on the central shaft of the streamline body, a rectangular access hole is arranged on the outer surface of the streamline body, an access cover for opening and closing is arranged at the short side of the rectangular access hole, and a handle is arranged on the access cover.
In a further example, the current collector includes a front flange which is sleeved on the front end of the streamlined body through a screw thread, a connecting plate which is fixedly installed at one end of the front flange, a rear flange which is fixedly connected to one end of the connecting plate, and a lifting lug which is fixedly connected to the front flange at one end and fixedly connected to the rear flange at the other end.
In a further example, the two ends of the ventilator cover are provided with protective nets, and the diffusion cylinder is designed to be trumpet-shaped.
In a further example, the moving blade includes a strut, a top baffle fixedly mounted at an end of the strut, a blade fixedly mounted on the top baffle, and a root baffle fixedly mounted at a root of the blade.
In a further example, the speed changing device comprises a base, a worm and a worm wheel which are arranged on the base, a driven conical gear connected to one end of the worm, a driving conical gear meshed with the driven conical gear, and a driving shaft sleeve arranged on the driving conical gear, wherein the driving shaft sleeve is concentrically arranged with a motor shaft of a driving motor.
Has the advantages that: the utility model provides a subway is ventilation equipment for tunnel, frequency conversion through driving motor realizes quick just, and in the ventilation operation, the change of the angle change control wind direction of the blade of adoption fan, accomplish fast from blowing to convulsions or from convulsions to the quick conversion of blowing, one end through at speed change gear sets up the blast gate, when the occasion at needs adjustment amount of wind and wind pressure, adjust through rotational speed and the blast gate that adopts control fan, and then after adopting the adjustment blade that does not stop, the adjustment of amount of wind pressure wind direction can become very convenient, whole accommodation process is swift, the fan efficiency after the regulation also is at the higher level.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a side view of an impeller assembly in the present invention.
Fig. 3 is a cross-sectional view of an impeller assembly in the present invention.
Fig. 4 is a view of the impeller assembly a of the present invention.
Fig. 5 is a sectional view of a rectifying body according to the present invention.
Fig. 6 is a sectional view of the rotor blade according to the present invention.
Fig. 7 is a B-B sectional view of the rotor blade of the present invention.
Fig. 8 is a sectional view taken along line a-a of the rotor blade of the present invention.
Fig. 9 is a front view of the streamlined body of the present invention.
The figures are numbered: the device comprises a rectifier body 1, a diffuser 2, a ventilator cover 13, an I-shaped steel base 17, an impeller assembly 5, a streamline body 12, a main air duct 4, a current collector 11, a support column 18, a driving motor 8, a speed change device 7, an air valve 14, a coupler 6, a transmission shaft 10, a hub 19, a circular baffle 20, a moving blade 21, a through hole 22, a rectangular access hole 23, an access cover 24, a handle 25, a front flange 26, a rear flange 27, a lifting lug 28, a support rod 29, a top baffle 30, a blade 31, a root baffle 32 and a connecting plate 33.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In the description of the present application, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Through research and analysis of the applicant, the subway tunnel ventilation equipment in the prior art has the defect of low braking speed when the direction is changed in work, the angle of the blade is adjusted in the blade angle adjusting mode in the prior art under the condition that a fan is stopped, the adjusting range is narrow, the application limit degree is large, and the ventilation equipment cannot respond to sudden situations occurring occasionally in a subway tunnel in time.
A ventilation device for a subway tunnel comprises a rectifying body 1, a diffusion cylinder 2, a ventilator cover 13, an I-shaped steel base 17, an impeller assembly 5, a streamline body 12, a main air cylinder 4, a current collector 11, a support column 18, a driving motor 8, a speed change device 7, an air valve 14, a coupling 6, a transmission shaft 10, a hub 19, a circular baffle 20, a moving blade 21, a through hole 22, a rectangular access hole 23, an access cover 24, a handle 25, a front flange 26, a rear flange 27, a lifting lug 28, a support rod 29, a top baffle 30, a blade 31, a root baffle 32 and a connecting plate 33.
An I-steel base 17 in the ventilation device is fixedly arranged in a tunnel, a ventilator cover 13 is fixedly arranged on the I-steel base 17, an impeller assembly 5 is coaxially arranged on the ventilator cover 13 and is positioned in the ventilator cover 13, in order to prevent shaft bounce caused by rotation of an impeller for long-time work, protective nets are arranged at two ends of the ventilator cover 13, the impeller assembly 5 is in contact with the ventilator cover 13 due to the shaft bounce, a preset gap is arranged between the top of the impeller assembly 5 and the inner wall of the ventilator cover 13, accidents of the impeller assembly 5 are prevented, the service cycle of the impeller assembly 5 is prolonged, a streamline body 12 is coaxially matched with the ventilator cover 13 and is arranged on the left side of the ventilator cover 13, and a main air duct 4 is fixedly connected on the outer wall of the ventilator cover 13, the current collector 11 is fixedly installed on the upper surface of the main air barrel 4, the current collector 11 is positioned between the inner walls of the main air barrel 4, the diffusion barrel 2 is arranged on the right side of the main air barrel 4, in order to increase the blowing effect, the diffusion barrel 2 is designed into a horn shape, the rectifying body 1 is arranged on the right side of the main air barrel 4, the integral flow is concentric with the ventilator cover 13, the strut 18 is fixedly installed on the outer wall of the integral flow, the strut 18 penetrates through the region of the diffusion barrel 2, the tunnel is blown and induced by the rotation of the impeller assembly 5, so that the air in the tunnel is circulated, meanwhile, in order to facilitate the maintenance, the streamline body 12 is designed into a hemispherical shape, the through hole 22 is arranged at the position of the central shaft of the streamline body 12, and the rectangular maintenance port 23 is arranged on the outer surface of the streamline body 12, an access cover 24 is arranged at the short side of the rectangular access opening 23, a handle 25 is arranged on the access cover 24 for opening conveniently, meanwhile, in order to increase the stability of the streamline body 12, the current collector 11 is sleeved on the streamline body 12, the diameters of the front flange 26 and the rear flange 27 are different because the streamline is in a hemispherical field shape, the front flange 26 is sleeved and screwed on the streamline body 12 and is positioned at the front end of the streamline, a connecting plate 33 is fixedly arranged on the front flange 26 and is positioned at the end part of the front end, the rear flange 27 is fixedly connected at the other end of the connecting plate 33, and a lifting lug 28 is arranged at the connecting part of the front flange 26 and the rear flange 27 for mounting and protecting.
Drive arrangement includes driving motor 8, and speed change gear 7 sets up 8 rotation of driving motor holds the higher authority, and blast gate 14 is connected above speed change gear 7, 6 interference fit of shaft coupling install the higher authority of 7 rotational speed axles of speed change gear, the higher authority of transmission shaft 10, the other end pass on shaft coupling 6 collector 11 with the impeller links together, wherein speed change gear 7 includes the frame, and worm and turbine set up simultaneously the higher authority of frame, passive conical gear fixed connection be in the one end of worm, initiative conical gear with move conical gear meshing intermeshing, 10 sets of fixed mounting of transmission shaft are in the higher authority of initiative conical gear, simultaneously 10 sets of motor shaft concentric the installation with driving motor 8 are in the same place for the transmission shaft. The hub 19 is coaxially keyed and installed on the rotating shaft, the circular baffle 20 is installed on the hub 19 in a threaded mode, the moving blades 21 are installed on the circular baffle 20 in a threaded mode, the installation angle of the moving blades is 0 degrees, 16 moving blades 21 are installed on the baffle, the moving blades 16 are installed on the circular baffle 20 in an equally-divided mode, each moving blade 21 comprises a support rod 29, a top baffle 30 is fixedly installed on the support rod 29 and located at the end portion, blades 31 are fixedly installed on the top baffle 30, and a root baffle 32 is fixedly installed on the blades 31. By connecting the conductive ring to the front end cover portion of the driving motor 8, it is possible to apply a blade 31 adjusting signal to the fan when the fan is operated, and to control the change of the flow rate by a simple adjusting structure. The whole movable vane adjusting structure is divided into an impeller part and a worm and worm wheel part, the connection between the two parts is realized by a driven conical gear and a driving conical gear, the driven conical gear is concentrically arranged with a transmission shaft 10 sleeve and a motor shaft of a driving motor 8 and is simultaneously meshed with all the driven conical gears, a transmission signal from the worm and worm wheel part is converted into synchronous rotation action of all the vanes 31 in such a way, the synchronous rotation action is limited by a ring of a tunnel, in order to increase the use efficiency of a fan, wherein the scroll bar, the conical gear and the driving conical gear are made of steel, an end cover is made of aluminum profiles, and in order to reduce the centrifugal force of the fan, the vanes 31 are made of aluminum. The blade 31 is made of aluminum. The use of a stepping motor as an output element for adjusting the power improves the accuracy of the angle adjustment of the blade 31 to some extent.
As a preferred installation, according to the flow demand, the accuracy is that a stepping motor inputs power to a worm, a worm wheel rotates along with the rotation of the worm, then a driving bevel gear connected with the worm is driven to rotate, finally a gear set drives a blade 21 bearing to rotate, and then the installation angle of the blade 31 is changed. In the process, the action electric signal of the driving motor 8 is used as an adjusting signal, the driving motor 8 is used as an adjusting power output element, and the worm gear speed reducer is used as an angle adjusting structure to sequentially act to complete adjustment. On the other hand, the self-locking characteristic of the whole adjusting structure is an important guarantee that the blade 31 works in a normal state.
As a preferred scheme, when the normal operation of the axial flow fan in the subway tunnel is influenced, the static force borne by the structure of the blade 31 mainly considers two loads: firstly, aerodynamic load brought by circulation of airflow; secondly, when the installation angle of the blade 31 is 30 degrees and the setting condition only considers the influence of aerodynamic force, the maximum equivalent stress value of the impeller is 0.0007MPa which is far smaller than the influence of centrifugal force on the impeller, the maximum stress value appears in the top end area of the suction surface, the stress is in a decreasing trend from the top end of the blade 31 to the blade root, and the general stress trend is greatly influenced by the centrifugal force. When the installation angle of the blade 31 is 20 degrees and 10 degrees, the impeller is subjected to structural static simulation, the maximum equivalent stress value of the impeller is only 0.0003952MPa when only the influence of aerodynamic force is considered, meanwhile, when the aerodynamic force and centrifugal force are considered, the stress concentration phenomenon also exists at the blade root, the static pressure direction of airflow is vertical to the surface of the blade 31, the direction of the centrifugal force is along the radial direction of the impeller, the static pressure direction and the centrifugal force direction are vertical to each other, so that the surface of the blade 31 has slight change, when the installation angle is 0 degree, almost no aerodynamic force acts on the blade 31, and then the installation angle of the blade 31 is 0 degree.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (7)
1. A ventilation device for a subway tunnel is characterized by comprising
The ventilation device comprises an I-shaped steel base, a ventilator cover fixedly arranged on the I-shaped steel base, an impeller assembly coaxially arranged in the ventilator cover, a streamline body coaxially matched with the ventilator cover and positioned on the left side of the ventilator cover, a main air duct fixedly connected to the outer wall of the ventilator cover, a current collector fixedly arranged on the inner wall of the main air duct, a rectifier body and a diffusion tube arranged on the right side of the main air duct, and a strut fixedly connected to the outer wall of the rectifier body in a threaded manner and penetrating through the diffusion tube;
the driving device comprises a driving motor, a speed change gear arranged at the rotating end of the driving motor, an air valve connected to the speed change gear, a coupler arranged on a rotating speed shaft of the speed change gear in an interference fit manner, and a transmission shaft with one end fixedly connected to one end of the coupler and the other end penetrating through the collector and the impeller which are connected together.
2. The ventilation apparatus for a subway tunnel according to claim 1, wherein: the impeller assembly comprises a hub which is coaxially and in key fit with the transmission shaft, a baffle plate which is installed on the hub in a threaded mode, 16 moving blades which are installed on the baffle plate in a threaded mode and have an angle of 0 degree, and the moving blades 16 are installed on the baffle plate in an equally-divided mode.
3. The ventilation apparatus for a subway tunnel according to claim 1, wherein: the streamline body is designed to be hemispherical, a through hole is formed in the center shaft of the streamline body, a rectangular access hole is formed in the outer surface of the streamline body, an access cover used for opening and closing is arranged at the short edge of the rectangular access hole, and a handle is arranged on the access cover.
4. The ventilation apparatus for a subway tunnel according to claim 1, wherein: the collector comprises a front flange, a connecting plate, a rear flange and a lifting lug, wherein the front flange is sleeved at the front end of the streamlined body through a screw thread, the connecting plate is fixedly installed at one end of the front flange, the rear flange is fixedly connected to one end of the connecting plate, one end of the lifting lug is fixedly connected to the front flange, and the other end of the lifting lug is fixedly connected to the rear flange.
5. The ventilation apparatus for a subway tunnel according to claim 1, wherein: protective nets are arranged at two ends of the ventilator cover, and the diffusion cylinder is designed into a horn shape.
6. The ventilation apparatus for a subway tunnel according to claim 2, wherein: the moving blade comprises a supporting rod, a top baffle fixedly installed at the end part of the supporting rod, a blade fixedly installed on the top baffle, and a root baffle fixedly installed at the root part of the blade.
7. The ventilation apparatus for a subway tunnel according to claim 1, wherein: the speed change device comprises a base, a worm and a worm wheel which are arranged on the base, a driven conical gear connected to one end of the worm, a driving conical gear meshed with the driven conical gear, and a transmission shaft sleeve arranged on the driving conical gear, wherein the transmission shaft sleeve and a motor shaft of a driving motor are concentrically arranged together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921585546.2U CN210858782U (en) | 2019-09-23 | 2019-09-23 | Ventilation equipment for subway tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921585546.2U CN210858782U (en) | 2019-09-23 | 2019-09-23 | Ventilation equipment for subway tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN210858782U true CN210858782U (en) | 2020-06-26 |
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ID=71305170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921585546.2U Active CN210858782U (en) | 2019-09-23 | 2019-09-23 | Ventilation equipment for subway tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210858782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117905512A (en) * | 2024-01-22 | 2024-04-19 | 枣庄恒发矿用机电设备有限公司 | Wind flow angle adjustable adjusting device for coal mine construction |
-
2019
- 2019-09-23 CN CN201921585546.2U patent/CN210858782U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117905512A (en) * | 2024-01-22 | 2024-04-19 | 枣庄恒发矿用机电设备有限公司 | Wind flow angle adjustable adjusting device for coal mine construction |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A ventilation equipment for subway tunnels Granted publication date: 20200626 Pledgee: Bank of China Limited by Share Ltd. Nanjing Jiangning branch Pledgor: Nanjing Putaide Electric Technology Co.,Ltd. Registration number: Y2024980021159 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |